Metallurgy, Vol. 54 No. 3, 2015.
Preliminary communication
Influence of use of ultrasound on metallographic structure of plated pieces by welding in ultrasonic field
Gh. Amza
; Faculty of Engineering and Management of Technological, Polytehnic University of Bucharest, Romania
D. Dobrotă
; Engineering Faculty, “Constantin Brâncuşi” University of Târgu-Jiu, Romania
V. Petrescu
; Engineering Faculty, Lucian Blaga University of Sibiu, Romania
Z. Apostolescu
; Faculty of Engineering and Management of Technological, Polytehnic University of Bucharest, Romania
R. G. Albulescu
; The Oil Company, Ploiesti, Romania
Abstract
To optimize the plating process is necessary to know the behavior of surfaces plated during the exploitation and in particular susceptibility to cracking, the formation of cracks from the inside to outside or reverse, embrittlement in the heat affected zone. Research has been realized considering several samples plated by welding without ultrasonic activation and with ultrasonic activation, and these samples were made of AISI 4130 steel, and as filler material was used Inconel 625 Fe developed as electrode wire ø 1,2 / mm. The plating process was realized by a WIG welding process in Ar100 /% environment with non-consumable tungsten electrode, in two versions, respectively with and without the use of ultrasonic energy. Four pieces played by welding there were analyzed the metallographies structure in the base material, the deposited material and the material from the heat affected zone.
Keywords
plating by welding; ultrasonic energy; metallographic structure; porosity
Hrčak ID:
131613
URI
Publication date:
1.7.2015.
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